Typed letters belonging to A.M. Grenfell giving explanatory notes about the advance guard, rear guard, reconnaissance, musketry and horse grooming. Extracts include: reconnaissance notes that 'information regarding the enemy'۪s dispositions and the features of the country is absolutely essential for success in war'. Rear Guard notes that 'the conduct of a rear guard depends for its success almost entirely on the character, determination, skill, and energy displayed by its commander'.

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